The use of rosin bags by pitchers came about, at least in part, to combat skullduggery. - CSMonitor.com
![New York Mets relief pitcher Billy Wagner tosses the rosin bag in the ninth inning of an MLB National League baseball game against the Washington Nationals at Shea Stadium in New York, New York Mets relief pitcher Billy Wagner tosses the rosin bag in the ninth inning of an MLB National League baseball game against the Washington Nationals at Shea Stadium in New York,](https://c8.alamy.com/comp/2E7XB0M/new-york-mets-relief-pitcher-billy-wagner-tosses-the-rosin-bag-in-the-ninth-inning-of-an-mlb-national-league-baseball-game-against-the-washington-nationals-at-shea-stadium-in-new-york-september-26-2007-reutersjeff-zelevansky-united-states-2E7XB0M.jpg)
New York Mets relief pitcher Billy Wagner tosses the rosin bag in the ninth inning of an MLB National League baseball game against the Washington Nationals at Shea Stadium in New York,
![Game Used Rosin Bag - Wheeler 7 IP, 1 ER, 7 K's, Earns 11th Win of 2019; Frazier 2-3, 3 RBI's; Mets Win 3-2 - Mets vs. Diamondbacks - 9/10/19 | New York Mets Auctions Game Used Rosin Bag - Wheeler 7 IP, 1 ER, 7 K's, Earns 11th Win of 2019; Frazier 2-3, 3 RBI's; Mets Win 3-2 - Mets vs. Diamondbacks - 9/10/19 | New York Mets Auctions](https://vafloc02.s3.amazonaws.com/isyn/images/f693/img-2917693-m.jpg)
Game Used Rosin Bag - Wheeler 7 IP, 1 ER, 7 K's, Earns 11th Win of 2019; Frazier 2-3, 3 RBI's; Mets Win 3-2 - Mets vs. Diamondbacks - 9/10/19 | New York Mets Auctions
![Amazon.com: Franklin Sports MLB Gator Grip Rosin Bag - Multi Sport + Baseball + Softball - Absorbs Moisture : Toys & Games Amazon.com: Franklin Sports MLB Gator Grip Rosin Bag - Multi Sport + Baseball + Softball - Absorbs Moisture : Toys & Games](https://m.media-amazon.com/images/S/aplus-media-library-service-media/1aae240e-9e8b-40ad-a66f-1cf4f43c2880.__CR0,0,970,600_PT0_SX970_V1___.jpg)